Remove deprecated WITH_HOST_DALVIK.

Bug: 13751317
Fix the Mac build:
 - disable x86 selector removal that causes OS/X 10.9 kernel panics,
 - madvise don't need does zero memory on the Mac, factor into MemMap
   routine,
 - switch to the elf.h in elfutils to avoid Linux kernel dependencies,
 - we can't rely on exclusive_owner_ being available from other pthread
   libraries so maintain our own when futexes aren't available (we
   can't rely on the OS/X 10.8 hack any more),
 - fix symbol naming in assembly code,
 - work around C library differences,
 - disable backtrace in DumpNativeStack to avoid a broken libbacktrace
   dependency,
 - disable main thread signal handling logic,
 - align the stack in stub_test,
 - use $(HOST_SHLIB_SUFFIX) rather than .so in host make file variables.

Not all host tests are passing on the Mac with this change. dex2oat
works as does running HelloWorld.
Change-Id: I5a232aedfb2028524d49daa6397a8e60f3ee40d3

1 files changed, 8 insertions, 0 deletions

diff --git a/runtime/mem_map.h b/runtime/mem_map.h
index dc5909b105..e42251ce57 100644
--- a/runtime/mem_map.h
+++ b/runtime/mem_map.h
@@ -30,6 +30,12 @@
 
 namespace art {
 
+#ifdef __linux__
+static constexpr bool kMadviseZeroes = true;
+#else
+static constexpr bool kMadviseZeroes = false;
+#endif
+
 // Used to keep track of mmap segments.
 //
 // On 64b systems not supporting MAP_32BIT, the implementation of MemMap will do a linear scan
@@ -77,6 +83,8 @@ class MemMap {
 
   bool Protect(int prot);
 
+  void MadviseDontNeedAndZero();
+
   int GetProtect() const {
     return prot_;
   }